CN101169834A

CN101169834A - Generating device of trigger signal

Info

Publication number: CN101169834A
Application number: CNA2007101675841A
Authority: CN
Inventors: 梅田俊之; 大高章二
Original assignee: Toshiba Corp
Current assignee: Toshiba Corp
Priority date: 2006-10-27
Filing date: 2007-10-29
Publication date: 2008-04-30
Also published as: JP2009089434A; JP4745379B2

Abstract

A trigger signal generating device includes a first power source terminal and a second power source terminal; a first current generator to generate a first current with a first amplitude in accordance with the amplitude of the input signal; a second current generator to generate a second current with a second amplitude, the second current being flowed from the first power source terminal to the second power source terminal; a current mirror circuit to amplify the second current generated from the second current generator to obtain an amplified current; and a trigger signal generator to convert the amplified current into a trigger signal used for triggering a trigger device, the voltage amplitude of the trigger signal being corresponding to the current amplitude of the amplified current; wherein both of the first and second current generators are connected to either one of the first and second power source terminals.

Description

The generating means of trigger pip

Technical field

The present invention relates to a kind of generating means of trigger pip, this device can produce trigger pip, so that change the state of electrical equipment by receiving radio signals.

Background technology

Common available corresponding remote control switches on or off such as the such electrical equipment of televisor.Electrical equipment receives from the optical signalling of telepilot emission, makes electrical equipment be connected.In order to realize the making operation of electrical equipment, optical receiver in the electrical equipment and power-supply controller of electric are in operable state always.That is,, also consume some electric energy always, because described optical receiver and power-supply controller of electric are in operable state even electrical equipment is not connected.

As mentioned above, optical signalling has been used in described remote control.Because use the telepilot low cost of optical signalling, if between telepilot and electrical equipment barrier is arranged, telepilot just can not carry out optical communication so.In this, the reception structure (file 1 sees reference) of using electromagnetic RFID label such has been proposed.In reference paper 1, in order to reduce the power consumption of electrical equipment under its holding state, between the wave detector of RFID label and electrical equipment, insert starting switch.For described starting switch provides power supply, described wave detector does not then have power supply from electrical equipment.

Switch based on the output state control apparatus power supply of starting switch.When starting switch output shutoff signal, electrical equipment just is cut off, and makes no longer consumed power of electrical equipment.When starting switch output connection signal, electrical equipment just is switched on.For example, for televisor, on screen, show some images and produce number voice.For described starting switch provides power supply, power supply can be made by the CMOS phase inverter from electrical equipment.In this case, need not provide electric current for starting switch because no matter the mode of operation of described phase inverter how, nMOS transistor in the phase inverter or pMOS transistor are in the state of pass.

Described wave detector utilizes antenna to receive outside electromagnetic wave, produces voltage by the electric energy in the electromagnetic wave then.When the input electric energy of wave detector became big, it is big that the output voltage of wave detector just becomes.Because electrical equipment is not for wave detector provides electric energy, the stand-by power consumption of wave detector is zero.Be input in the starting switch by output voltage, can produce the ON/OFF control signal of electrical equipment wave detector.So, compare with the telepilot that uses optical signalling, use phase inverter as the holding state of the telepilot of power supply in power consumption just can reduce.

Yet, because wave detector is by the less voltage of input generation of electromagnetic wave electric energy, so can not be with start switch or cut-out, unless there is bigger electric energy to import starting switch from wave detector.In other words, need to give the RFID label that bigger electric energy is provided, this makes the distance between electrical equipment and the telepilot can not become big.

In reference paper 2 and 3, propose, wave detector is increased the electric energy that produces.So, according to the improvement of being announced in reference paper 2 and 3 wave detector, the operating distance of telepilot can increase to a certain extent.

(reference paper 1) JP-A 2001-197537 (KOKAI)

(reference paper 2) JP-A 2006-34085 (KOKAI)

(reference paper 3) JP-A 2006-166415 (KOKAI)

Summary of the invention

At above-mentioned traditional problem, a target of the present invention is that a kind of generating means of trigger pip is provided, design described trigger pip generating means, so that change the state of electrical equipment, it is configured, but so that increases the operating distance of wireless launcher by receiving radio signals.

In order to realize above-mentioned target, one aspect of the present invention relates to a kind of trigger pip generating means, and it comprises: first power end and second source end; First current feedback circuit, its receiving inputted signal produces first electric current with first amplitude according to the amplitude of described input signal; Second current feedback circuit, described first electric current that it receives described first current feedback circuit produces second electric current with second amplitude, and described second electric current flows to described second source end from described first power end; Current mirroring circuit is used for amplifying described second electric current that is produced from described second current feedback circuit, with the electric current that has obtained to amplify; Trigger signal generator is used for described current conversion of having amplified is become trigger pip, be used to trigger flip flop equipment, and the voltage amplitude correspondence of described trigger pip the current amplitude of the described electric current that has amplified; Wherein, some being connected in described first and second current feedback circuits and described first power end and the described second source end.

In described trigger pip generating means, if imported signal, so described first current feedback circuit produces the electric current with predetermined amplitude according to the amplitude of described signal.Described electric current is offered described second current feedback circuit, so that produce another electric current with another amplitude according to the amplitude of described electric current.In described current mirroring circuit, described another electric current is amplified.Afterwards, the amplified current that obtains like this is converted into correspondent voltage (trigger pip).So, even the amplitude of the electric current that produces in described first current feedback circuit is very little, the expection trigger pip that the amplitude that also can obtain is relatively large.So described trigger pip can change the state of electrical equipment, make that the distance between wireless launcher and the electrical equipment can increase.

If there is not input signal, so, and the electric potential difference between the output terminal of power end that the electric potential difference between the input end of the power end that links to each other of described second current feedback circuit and described signal amplifier is set to equal and described first current feedback circuit links to each other and described first current feedback circuit.So, because even described first current feedback circuit and described second current feedback circuit are disconnected, also do not have electric current to flow in described first current feedback circuit and described second current feedback circuit, make described generator, the power consumption of promptly described trigger pip generating means can reduce.

According to described aspect, a kind of trigger pip generating means can be provided, design described trigger pip generating means, so that change the state of electrical equipment, it is configured, but so that increases the operating distance of wireless launcher by receiving radio signals.

Description of drawings

Fig. 1 is about the circuit diagram according to the structure of a described trigger pip generating means of embodiment;

Fig. 2 has shown current mirroring circuit CM1 in the trigger pip generating means shown in Figure 1 and the I/O current characteristics of CM2;

Fig. 3 is the circuit diagram of the wave detector in the trigger pip generating means shown in Figure 1;

Fig. 4 is the circuit diagram with the structurally associated of the described trigger pip generating means of another embodiment;

Fig. 5 is the circuit diagram of power-supply controller of electric shown in Figure 1;

Fig. 6 is the circuit diagram with the structurally associated of the described trigger pip generating means of another embodiment;

Fig. 7 is the circuit diagram of current occuring circuit shown in Figure 1;

Fig. 8 is another circuit diagram of current occuring circuit shown in Figure 1;

Fig. 9 is another circuit diagram of current occuring circuit shown in Figure 1;

Figure 10 is another circuit diagram of current occuring circuit shown in Figure 1;

Figure 11 is the circuit diagram with the structurally associated of the described trigger pip generating means of another embodiment;

Figure 12 is the circuit diagram that comprises Fig. 1 and current-to-voltage convertor shown in Figure 6;

Figure 13 is the physical circuit figure of Fig. 1 and current-to-voltage convertor shown in Figure 6;

Figure 14 has shown the transistorized current-voltage characteristic of the pMOS in the current-to-voltage convertor shown in Figure 13;

Figure 15 is the circuit diagram with the structurally associated of the described trigger pip generating means of another embodiment;

Figure 16 is the circuit diagram with the structurally associated of the described trigger pip generating means of another embodiment;

Figure 17 is the circuit diagram with the structurally associated of the described trigger pip generating means of another embodiment;

Figure 18 is a process flow diagram, has shown the operation of trigger pip generating means shown in Figure 17;

Figure 19 is another process flow diagram, has shown the operation of trigger pip generating means shown in Figure 17;

Figure 20 is another process flow diagram, has shown the operation of trigger pip generating means shown in Figure 17;

Figure 21 has been to use the circuit diagram of the mobile phone of trigger pip generating means shown in Figure 17;

Figure 22 has shown a kind of situation of using the mobile phone among Figure 21;

Figure 23 has been to use the circuit diagram of the radio communication device of trigger pip generating means shown in Figure 17.

Detailed description of the present invention

In one embodiment, second current feedback circuit comprises an extra current mirror (currentmirror) circuit.In this embodiment, owing to used described current mirroring circuit, can make described second current feedback circuit have the electric current enlarging function by the size that changes the transistor (or a plurality of transistor) in the described current mirroring circuit.Owing under dissengaged positions, in second current feedback circuit, do not have electric current to flow, so can reduce the consumption of electric energy in second current feedback circuit.

The a plurality of extra current mirroring circuit of cascade can be set in another embodiment.In this case, can easily increase the electric current gain amplifier, and Control current direction (that is, electric current can flow in forward direction or in opposite direction) freely.

In another embodiment, first current feedback circuit comprises that has the transistorized wave detector of nMOS, and described wave detector is configured to make the voltage with detection to be applied on described nMOS transistor drain and the grid and a normal voltage is applied on the transistorized grid of described nMOS.In this case, can easily produce prospective current by controlling the amplitude that to import signal wherein with predetermined amplitude.

In another embodiment, second current feedback circuit comprises a nMOS transistor and the 2nd nMOS transistor that constitutes current mirroring circuit, this current mirroring circuit also comprises a pMOS transistor and the 2nd pMOS transistor, wherein, the transistorized configuration of the one pMOS will make a described pMOS transistor drain link to each other with described the 2nd nMOS transistor drain with grid, and applies second standard electrode potential on the transistorized source electrode of a described pMOS; The transistorized configuration of described the 2nd pMOS makes the amplified current that flows through signal amplifier export from described the 2nd pMOS transistor drain.

In this embodiment, second current feedback circuit produces aforesaid electric current from first power end to the second source end, and this electric current amplifies by current mirroring circuit, thereby the electric current enlarging function is applied to second current feedback circuit.

In another embodiment, second current feedback circuit comprises transistor, and the trigger pip generating means comprises offset compensator, is used to compensate the drift current that flows into this transistor drain.

In this embodiment, when not producing demodulation current and offer this transistor, the drift current (leakage current) that produces in the described transistor of second current feedback circuit can be compensated by offset compensator.So the operation of the element after second current feedback circuit is unaffected.

In another embodiment, the trigger pip generating means comprises: a nMOS transistor, and the feasible amplified current by described signal amplifier of its configuration flows to the transistorized source electrode of a described nMOS from the transistorized leakage of a described nMOS/grid common connection end; The 2nd nMOS transistor constitutes an additional current mirroring circuit with a described nMOS transistor; PMOS transistor, its configuration make described pMOS transistor drain link to each other with described the 2nd nMOS transistor drain, and standard electrode potential is applied on the transistorized source electrode of described pMOS; And bias voltage generator, its configuration makes the voltage that is produced between the transistorized leakage of a described nMOS/grid common connection end and the transistorized source electrode of a described nMOS be transfused to, so that export non-linear voltage as trigger pip to the transistorized grid of described pMOS in response to the amplitude of this voltage, wherein, described trigger pip is exported from the connected node between described the 2nd nMOS transistor drain and the described pMOS transistor drain.

In this embodiment, because the bias voltage that will be applied on the transistorized grid of described pMOS is produced by bias voltage generator defined above, so, can need and increase by situation as the transistorized resistance of pMOS of the transistorized load of a described nMOS.So the output variable range of trigger signal generator can be extended.Here, trigger signal generator is the current-to-voltage convertor of input and output counter-rotating, because when the electric current input of having amplified, and the voltage decline that export.

In another embodiment, shown in the trigger pip generating means comprise: power switch, it is operated in response to described trigger pip, so that produce and keep on-state; Synchronizing circuit, clocking under the power supply control of using described power switch to carry out, the variable frequency of the output level of described clock signal and described trigger signal generator is synchronous; Shift register under the power supply control of using described power switch to carry out, is used for by the described clock signal of input as shift signal, the variable hysteresis (variable hysteresis) of storing described trigger signal generator; Storer, under the power supply control of using described power switch to carry out, storage standards information; Decision circuitry, under the power supply control of using described power switch to carry out, be used for by to described variable hysteresis and described standard information relatively produce indicator signal, be complementary with variable hysteresis and the described standard information of pointing out output level.

In this embodiment, be output as the described trigger pip of the output of described decision circuitry, the id information of described (RF) signal can wait to determine by displacement resistance.Promptly, judge described trigger pip in decision circuitry, whether described trigger pip is specifically designed to the electrical equipment of (intended) paid close attention to, therefore, if described trigger pip is specifically designed to the electrical equipment of being paid close attention to, can export described trigger pip for the electrical equipment of being paid close attention to so.In addition, because the power supply of synchronizing circuit, displacement resistance etc. is subjected to the control of power switch, so in off-state, can strengthen economize on electricity.

In another embodiment, described memory stores first standard information and second standard information are as described standard information; Described trigger pip generating means comprises additional power switch, first indicator signal that the power switch that should add responds in the described decision circuitry is operated, described first indicator signal indicates the variable hysteresis of described output level and described first standard information to be complementary, so that produce and keep an off-state, and second indicator signal that the power switch that should add responds in the described decision circuitry is operated, described second indicator signal indicates the variable hysteresis of described output level and described second standard information to be complementary, so that produce and keep an on-state.

In this case, when in the specific region during from electrical equipment being disconnected of wireless launcher emission with the corresponding operation signal of described first standard information, perhaps, when in nonspecific zone, launch with the corresponding operation signal of described second standard information electrical equipment is connected the time, can use described trigger pip generating means.For example, when using mobile phone as described electrical equipment, this mobile phone is forced to (or automatically) and cuts out.

Then, embodiment will be described with reference to the drawings.Fig. 1 has shown according to a described trigger pip generating means of embodiment.In Fig. 1, antenna 22, wave detector 21 and start-up circuit 10 have constituted described trigger pip generating means, and power-supply controller of electric 24 and electrical equipment 23 have constituted the object that its state switching is controlled by the trigger pip of trigger pip generating means output.In this embodiment, produce trigger pip, so that connect the power supply of electrical equipment 23 by power-supply controller of electric 24.Example as electrical equipment 23 has, the radio communication device of televisor, mobile phone, network etc.Except above-mentioned making operation, trigger pip can also have other purposes.

But antenna 22 receptions are subordinated to the electromagnetic wave that the radio communication device (not shown) of operating side is launched, output RF signal.21 pairs of RF signals from antenna 22 of wave detector carry out detection, produce detecting circuit (dc voltage) then.In this, wave detector 21 has constituted voltage generator.That is, antenna 22 and wave detector 21 have constituted power supply to produce electric energy by receiving external energy.As shown in Figure 1, wave detector 21 does not need power supply (as following specifically described).Yet in order to determine the normal voltage of wave detector 21, the ground wire of wave detector 21 links to each other with start-up circuit 10.When the RF signal was not from antenna 22 input wave detectors 21, the electromotive force of the output terminal of wave detector 21 was set equal to the electromotive force of the power end of wave detector 21.In this case, because power end is electrical ground, so output terminal also is electrical ground.

Start-up circuit 10 is exported trigger pip by receiving detecting circuit from wave detector 21.Trigger pip is provided for power-supply controller of electric 24 so that connect electrical equipment 23 based on the trigger pip that is provided.

Start-up circuit 10 comprises current feedback circuit/current amplifier 11, current-voltage converter 12 and battery supply 13.Current feedback circuit comprises nMOS transistor M1, make to be applied between the leakage/grid that connects together and source electrode of transistor M1 on the basis of ground voltage (normal voltage or second normal voltage), thereby in current feedback circuit, produce electric current from the detecting circuit of wave detector 21 outputs.Current amplifier comprises nMOS transistor M2 and pMOS transistor M3, M4, make it possible to carry out the amplification of first electric current, carry out the amplification of second electric current at transistor M3 that constitutes the second current mirroring circuit CM2 and M4 place at transistor M1 that constitutes the first current mirroring circuit CM1 and transistor M2 place.

Amplified current is exported from the drain electrode of transistor M4 in current feedback circuit/current amplifier 11, and is imported in the current-voltage converter 12, so that produce a voltage as trigger pip based on the current amplitude that is input to converter 12.According to the structure of the trigger pip generating means after the power-supply controller of electric 24, the polarity of described output voltage can become positive or negative.Here, current-to-voltage convertor 12 is represented with solid line to the connection of ground connection.And current-to-voltage convertor 12 dots to the connection of power supply (second normal voltage or normal voltage), because this connection often is omitted.Battery supply 13 is as the power supply of start-up circuit 10, and battery supply 13 is also as the power supply of power-supply controller of electric 24 and electrical equipment 23 simultaneously.

Under the situation that demodulation current is not imported from wave detector 21, start-up circuit 10 is the electric energy of consuming cells power supply 13 not, this be because, do not having in transistor M1, do not have electric current to flow under the situation of detecting circuit, make in current mirroring circuit CM1 and CM2 and in current-to-voltage convertor 12, do not have electric current to flow, because if current-to-voltage convertor 12 is made of cmos circuit etc., the current status of converter 12 is to stay attitude.Power-supply controller of electric 24 is the electric energy of consuming cells power supply 13 not also, and reason is the same with reason in the start-up circuit 10.That is, power-supply controller of electric 24 also can comprise cmos circuit etc.When the trigger pip of start-up circuit 10 outputs was connected electrical equipment 23 by power-supply controller of electric 24, electrical equipment 23 was wanted some electric energy of consuming cells power supply 13.When electrical equipment 23 was cut off, electrical equipment 23 is consumed power not.

In this embodiment, because the electric potential difference V1 between wave detector 21 and the ground wire is set equal to the electric potential difference V2 between the first current mirroring circuit CM1 and the ground wire, when wave detector 21 and the first current mirroring circuit CM1 are cut off, in the wave detector 21 and the first current mirroring circuit CM1, do not have electric current to flow, make the consumption that under holding state, can reduce electric energy effectively.

So in Fig. 1, trigger pip generating means (antenna 22, wave detector 21 and start-up circuit 10), power-supply controller of electric 24 and electrical equipment 23 do not have electric current under holding state, aspect economize on electricity, present very big advantage.When antenna 22 receives the consumption that electric energy takes place when electromagnetic wave and wave detector 21 have produced demodulation current in start-up circuit 10.When electrical equipment 23 is connected by trigger pip, the consumption of some electric energy is arranged in electrical equipment 23.Yet in this case, when antenna 22 did not receive electromagnetic wave, trigger pip generating means (antenna 22, wave detector 21 and start-up circuit 10), power-supply controller of electric 24 be current sinking not.

Explanation is not, at the output terminal of current-to-voltage convertor 12 a settings/reset flip-flop (set-reset flip-floop) can be set, thereby keeps the on-state of electrical equipment 23 when not having the trigger pip generation so that disappear at electromagnetic wave.State storage circuitry as the set-reset flip-floop also can be set in power-supply controller of electric 24 or electrical equipment 23.In the above-mentioned any situation that exemplifies, if set-reset flip-floop is made of cmos circuit, set-reset flip-floop is being stayed under the attitude not consumed power so.

Fig. 2 has shown current mirroring circuit CM1 among Fig. 1 and the I/O current characteristics of CM2.As shown in Figure 2, for each current mirroring circuit, the generation of output current Iout is proportional to input current Iin.In the situation of integrated circuit, proportionality constant can be determined than (grid ratio) by the size of adjusting each MOS transistor.That is, proportionality constant is defined as the size ratio of MOS transistor.

According to the electric current enlarge-effect of current mirroring circuit CM1 and CM2, the detecting circuit that wave detector 21 is exported converts corresponding electric current to, and this electric current is amplified by current mirroring circuit CM1 and CM2.Amplified current is converted into correspondent voltage in current-to-voltage convertor 21 like this.Like this, the initial voltage of wave detector 21 generations is converted into corresponding amplified current.So owing to produce detecting circuit by receiving electromagnetic wave, even electromagnetic intensity very weak (that is, the light current magnetic wave), the trigger pip generating means can produce enough strong trigger pip to switch the state of electrical equipment.In other words, the distance between electrical equipment and the radio communication device (not shown) can be increased.If a plurality of current mirroring circuit cascades together, so just strengthened gain amplifier greatly.

When detecting circuit owing to receiving too strong electromagnetic wave when having exceeded predetermined voltage, near the first current mirroring circuit CM1 according to being positioned at the wave detector 21 can be reduced to detecting circuit under the predetermined voltage.Detecting circuit reduce the effect that reduces that effect comes from current mirroring circuit input impedance.If detecting circuit has reduced, so the detecting action of wave detector 21 can keep very high so that reduce energy loss.

Fig. 3 has shown the structure of the wave detector 21 in the trigger pip generating means shown in Figure 1.The configuration of wave detector 21 makes nMOS transistor MR1 connect with nMOS transistor MR2, each transistorized grid and its source electrode short circuit (that is, transistor MR1 has constituted being connected of diode mode respectively with MR2).Then, the RF signal of expection is by capacitor C1 input wave detector 21.In this case, the RF signal is applied on the node between transistor MR1 and the MR2.Then, it is in parallel with transistor MR1 and MR2 that smmothing capacitor C2 is set, so that produce output voltage (detecting circuit) between the source electrode of the drain electrode of transistor MR1 and transistor MR2.

In wave detector shown in Figure 3 21, in transistor MR1, capacitor C2 and transistor MR2, flow basically subsequently by the input caused electric current of RF signal wherein, so that produce dc voltage (detecting circuit) at the two ends of capacitor C2.In this case, lower end " DC-" links to each other with ground, and upper end " DC+ " links to each other with start-up circuit 10, as the output terminal of wave detector 21.

In trigger pip generating means shown in Figure 1, the first current mirroring circuit CM1 is made of the nMOS transistor, and comes work by the reception of electric current.So for the wave detector 21 that will link to each other with the first current mirroring circuit CM1, the upper end of wave detector 21 is as the output terminal of detecting circuit, as shown in Figure 3.

Opposite with start-up circuit 10 shown in Figure 1, the first current mirroring circuit CM1 can be made of pMOS.In this case, for the wave detector 21 that will link to each other with the first current mirroring circuit CM1, lower end (negative terminal) " DC-" is as the output terminal of wave detector voltage.Anode " DC+ " links to each other with the VDD of first current mirroring circuit.In this case, with direction from the current opposite in direction of this current mirroring circuit CM1 on, detecting circuit is applied on the first current mirroring circuit CM1.Like this, the current mirroring circuit that is made of the pMOS transistor just can have been worked.Under holding state, wave detector 21 and start-up circuit 10 be consumed power not.

In the situation that above-mentioned first current mirroring circuit is made of the pMOS transistor, the structure around wave detector 21 and the current amplifier 11 can dispose by Fig. 4.

Fig. 5 has shown the structure of power-supply controller of electric shown in Figure 1 24.In this embodiment, power-supply controller of electric 24 is configured to the phase inverter (that is CMOS phase inverter) that is made of pMOS transistor MS1 and nMOS transistor MS2.Because power-supply controller of electric 24 is configured to cmos circuit, thus under holding state power-supply controller of electric 24 consumed power not.The configuration of the electrical equipment 23 that will link to each other with power-supply controller of electric 24 makes and can it be switched on and off according to the level of power-supply controller of electric 24 outputs.

Fig. 6 relates to the trigger pip generating means that obtains after trigger pip generating means shown in Figure 1 revised.In this embodiment, adopted current occuring circuit CM1 ' shown in Figure 7 to substitute current mirroring circuit CM1 shown in Figure 1.Identical or corresponding elements is represented with identical reference symbol.

In Fig. 6, wave detector 21 and start-up circuit 10 have constituted the trigger pip generating means, and power-supply controller of electric 24 and electrical equipment 23 have constituted its state and switched the object of the trigger pip control that is subjected to the output of trigger pip generating means.In this embodiment, produce trigger pip so that connect the power supply of electrical equipment 23 by power-supply controller of electric 24.Example as electrical equipment 23 has, the radio communication device of televisor, mobile phone, network etc.Except above-mentioned making operation, can also adopt trigger pip to be used for other purposes.

21 pairs of RF signals from antenna 22 of wave detector carry out detection, produce detecting circuit (dc voltage) then.In this, wave detector 21 has constituted voltage generator.Trigger pip is provided for power-supply controller of electric 24.Power-supply controller of electric 24 is connected electrical equipment 23 based on the trigger pip that is provided.

Start-up circuit 10 comprises current feedback circuit/current amplifier 11, current-voltage converter 12 and battery supply 13.In current feedback circuit/current amplifier 11, current occuring circuit CM1 ' can be by for example configuration as shown in Figure 7.Current feedback circuit comprises nMOS transistor MA2, feasible detecting circuit (that is, the electromotive force of the lower end of capacitor CA1 is defined as the standard electrode potential or second standard electrode potential) under the situation of the electrical ground connection of the lower end of capacitor CA1 ground wire from wave detector 21 outputs is applied in the upper end of capacitor CA1.In this case, there is electric current to flow in the current feedback circuit.Capacitor CA2 is arranged between the grid of capacitor CA1 and nMOS transistor MA2, makes to apply a predetermined voltage according to the voltage that is applied on the capacitor CA1 on the grid of nMOS transistor MA2.

Then, power supply VA1 links to each other with the grid of nMOS transistor MA2 by resistance R A1, makes to apply a predetermined voltage between transistorized grid of nMOS and source electrode.Described current amplifier makes and realizes that in transistor MA2 first electric current amplifies by comprising nMOS transistor MA2, pMOS transistor M3 and M4, realize that second electric current amplifies in the second current mirroring circuit CM2 of transistor M3 and M4 formation.

Amplified current is from the drain electrode of transistor M4 output in current feedback circuit/current amplifier 11, and is transfused in the current-to-voltage convertor 12, so that produce a voltage based on the amplitude of the electric current of input converter 12.According to the structure of the trigger pip generating means after the power-supply controller of electric 24, the polarity of output voltage can become positive or negative.Here, the connection from current-to-voltage convertor 12 to ground is represented with solid line.And current-to-voltage convertor 12 dots to the connection of power supply (second normal voltage or normal voltage), because this connection often is omitted.Battery supply 13 is as the power supply of start-up circuit 10, and battery supply 13 also is used as the power supply of power-supply controller of electric 24 and electrical equipment 23 simultaneously.

Under the situation that demodulation current is not imported from wave detector 21, start-up circuit 10 is the electric energy of consuming cells power supply 13 not, this be because, do not having in nMOS transistor MA2, do not have electric current to flow under the situation of detecting circuit, make in current mirroring circuit CM2 and in current-to-voltage convertor 12, do not have electric current to flow, this is because if current-to-voltage convertor 12 is made of cmos circuit etc., and the current status of converter 12 is to stay attitude.The same with the reason in the start-up circuit 10, power-supply controller of electric 24 is the electric energy of consuming cells power supply 13 not also, because power-supply controller of electric 24 is made of cmos circuit etc.When the trigger pip of start-up circuit 10 outputs was connected electrical equipment 23 by power-supply controller of electric 24, electrical equipment 23 was wanted some electric energy of consuming cells power supply 13.When electrical equipment 23 was cut off, electrical equipment 23 is consumed power not.

In this embodiment, because the electric potential difference V1 between wave detector 21 and the ground wire is set equal to the output terminal of current occuring circuit CM1 ' and the electric potential difference V2 between the ground, when wave detector 21 and current occuring circuit CM1 ' are cut off, in wave detector 21 and current occuring circuit, do not have electric current to flow, make the consumption that under holding state, can reduce electric energy effectively.

Current occuring circuit CM1 ' among Fig. 7 will be described below.The predetermined voltage that power supply VA1 produces can be applied between the grid and source electrode of nMOS transistor MA2.For example, when having applied the threshold voltage according that equals transistor MA2, do not have input signal transistor MA2 just not amplify, but transistor MA2 just amplify to a certain extent when input signal is arranged, because be applied to the threshold value that voltage on the transistor MA2 has surpassed transistor MA2.So although the intensity of input signal is little, input signal is amplified by transistor MA2.

Current occuring circuit CM1 ' can dispose by shown in Figure 8.In this case, in order between the grid of nMOS transistor MA2 and source electrode, to apply a predetermined voltage, between the grid of current source iA1 that links to each other with VDD and transistor MA2 and ground wire, the nMOS transistor MA3 that employing is connected by the diode mode is set.

In this case, provide predetermined current for nMOS transistor MA3, produce given voltage at transistor MA3 place for its current value that provides with basis from current source IA1.The voltage that produces in transistor MA3 place is applied between the grid and source electrode of transistor MA2.The voltage that produces in transistor MA3 place is set equal under the situation of threshold voltage of transistor MA2, when the voltage that is produced is applied on the transistor MA2, there is not input signal transistor MA2 just not amplify, but transistor MA2 just amplified to a certain extent when input signal was arranged, because be applied to the threshold value that voltage on the transistor MA2 has surpassed transistor MA2.So although the intensity of input signal is little, input signal can be amplified by transistor MA2.

Current occuring circuit CM1 ' can dispose by shown in Figure 9.In this case, in order to apply a predetermined voltage between the grid of nMOS transistor MA2 and source electrode, series connection MOS transistor MA3 and MA4 between VDD and ground wire make the grid of nMOS transistor MA2 link to each other with node between transistor MA3 and the MA4.In this embodiment, when input signal offered transistor MA4, transistor MA4 just connected, thereby for for transistor MA3 provides electric current, so be to apply a predetermined voltage between the grid of transistor MA2 and the source electrode by transistor MA3.

When the voltage that is set to equal this generation under the situation of threshold voltage of transistor MA2 when the voltage that is produced at transistor MA3 is applied on the transistor MA2, there is not input signal transistor MA2 just not amplify, but transistor MA2 just amplified to a certain extent when input signal was arranged, because be applied to the threshold value that voltage on the transistor MA2 has surpassed transistor MA2.So although the intensity of input signal is little, input signal is amplified by transistor MA2.

Current occuring circuit CM1 ' can dispose by shown in Figure 10.In this case, in order between the grid of nMOS transistor MA2 and source electrode, to apply a predetermined voltage, MOS transistor MA3 and MA4 series connection make input signal be applied to the source electrode of MOS transistor MA4, and apply the grid of predetermined voltage to MOS transistor MA4 from VDD.So input signal amplifies in transistor MA4, therefore, given electric current is offered transistor MA3, thereby produce a given voltage according to the electric current that provides for it.The voltage that produces in transistor MA3 place is applied between the grid and source electrode of transistor MA2.

When the voltage that is set to equal described generation under the situation of threshold voltage of transistor MA2 when the voltage that produces in transistor MA3 place is applied on the transistor MA2, there is not input signal transistor MA2 just not amplify, but transistor MA2 just amplified to a certain extent when input signal was arranged, because be applied to the threshold value that voltage on the transistor MA2 has surpassed transistor MA2.So although the signal of input is little, this input signal is amplified by transistor MA2.

Trigger pip generating means shown in Figure 6 current sinking not when standby, but this trigger pip generating means produces trigger pip when signal sensor 21 detects signal, thus electrical equipment 23 is connected.

Figure 11 relates to the embodiment relevant with Fig. 1 is revised the resulting embodiment in back.In this embodiment, provide the drift current compensating unit.In Figure 11, identical or corresponding elements uses the reference number identical with Fig. 1 to represent.

Start-up circuit 10A comprises drift current compensating circuit 11a, and the drift current (leakage current) that the transistor MA2 that is positioned at the first current mirroring circuit CM1 output terminal is produced when not having electric current to flow among the transistor M1 of box lunch in the first current mirroring circuit CM1 compensates.Although the drift current of transistor M2 is very little, there is not drift current compensating circuit 11a, this drift current often produces the normal operation that is provided in current-to-voltage convertor 12 circuit afterwards and disturbs, because this drift current has been exaggerated.

Drift current compensating circuit 11a comprises transistor M5, M6, M7 and M8.Transistor M5 and M6 have constituted a current mirroring circuit, and its configuration is identical with the configuration mode of current mirroring circuit CM1.Transistor M7 and M8 have constituted a current mirroring circuit, and its configuration is identical with the configuration mode of current mirroring circuit CM2.That is, the drain and gate with the corresponding transistor M5 of transistor M1 links to each other with ground.This connection status means that detecting circuit is not input to transistor M1.In this case, in transistor M6, produced the corresponding electric current of drift current that is produced with transistor M2, and this electric current is input to transistor M2 by transistor M7 and M8, makes the electric current that is produced among the transistor M3 be compensated.Like this, the circuit after the second current mirroring circuit CM2 just can operate as normal.

The size of transistor M1 (grid width) is set to equal the size of transistor M5.The size of transistor M2 (grid width) is set to equal the size of transistor M6.The size of transistor M3, M7 and M8 (grid width) is set to be equal to each other.Yet only under the situation that the drift current of transistor M2 can be compensated by transistor M7, each transistorized size can be provided with arbitrarily.Under the situation of integrated circuit, wish that the transistorized size close to each other that is provided is identical, so that form a plurality of transistorized combinations.

Some elements of trigger pip generating means are described below.Figure 12 has shown the concrete structure of the current-to-voltage convertor 12 in the foregoing description relevant with Fig. 1.Figure 12 (a) has shown the simple structure of current-to-voltage convertor 12, and wherein, resistance R V1 is provided in to import between node and the ground.The expection output voltage can be by obtaining based on the output voltage of ground wire voltage and poor (input current multiply by resistance R V1) between the input voltage.When not having input current, current-to-voltage convertor 12 is current sinking not.

In Figure 12 (b), current-to-voltage convertor 12A is configured so that electric current is imported among the nMOS transistor MV1 that connects by the diode mode, so that produce output voltage in the drain electrode of nMOS transistor MV2.NMOS transistor MV1 and nMOS transistor MV2 have constituted current mirroring circuit.In this case, between the drain electrode of transistor MV2 and VDD (standard electrode potential), provide resistance R V2, so that produce output voltage.The polarity of the output voltage of the current-to-voltage convertor 12A among the polarity of the output voltage of the current-to-voltage convertor 12A among Figure 12 (b) and Figure 12 (a) is opposite.When not having input current, current-to-voltage convertor 12A is current sinking not.

In Figure 12 (c), current-to-voltage convertor 12B comprises that pMOS transistor MV3 is with substitutional resistance RV2.In this case, pMOS transistor MV3 is as the active load of transistor MV2.The electromotive force of the grid of transistor MV3 is fixed (being in this case, earth potential).Owing to do not need resistance, so the domain district of the element as the transistor just can reduce.When not having input current, current-to-voltage convertor 12B is current sinking not.

In Figure 12 (d), current-to-voltage convertor 12C is configured so that the grid voltage of transistor MV3 when the electric current of input current electric pressure converter 12C increases also increases.Electric current makes the grid voltage of transistor MV3 to increase by nMOS transistor MV4 and pMOS transistor MV5 and MV6 inflow resistance R V3.NMOS transistor MV4 and transistor MV1 constitute current mirroring circuit.PMOS transistor MV5 and MV6 constitute the current mirroring circuit that is positioned at VDD (second normal voltage) end.Resistance R V3 is as the load of transistor MV6.

Figure 14 has shown the current-voltage characteristic of the pMOS transistor MV3 shown in Figure 12 (d).In Figure 14, reference character " Vgs-small " is pointed out the current-voltage characteristic of the pMOS transistor MV3 shown in Figure 12 (c), and reference character " Vgs-large " is pointed out the current-voltage characteristic of transistor MV3 after the grid voltage of pMOS transistor MV3 increases.Consider the physical characteristics of a normal transistor, when grid/when source voltage Vgs reduced, drain current Id reduced.So direct current resistance Vds/Id increases.That is, when input voltage was converted into respective output voltages, the mutual resistance of current-to-voltage convertor 12C had increased.So the output of the current-to-voltage convertor shown in Figure 12 (d) becomes greater than the output variation of the current-to-voltage convertor shown in Figure 12 (c).When not having input current, current-to-voltage convertor 12C is current sinking not.

In Figure 12 (e), current-to-voltage convertor 12D comprises that nMOS transistor MV7 is with substitutional resistance RV3.In this case, nMOS transistor MV7 is as the active load of transistor MV6.Owing to do not need resistance, so the domain district of the element as the transistor just can reduce.When not having input current, current-to-voltage convertor 12D is current sinking not.

In Figure 12 (f), current-to-voltage convertor 12E comprises that the nMOS transistor MV8 that connects by the diode mode is with substitutional resistance RV3.In this case, nMOS transistor MV8 is as the active load of transistor MV6.Owing to do not need resistance, so the domain district of the element as the transistor just can reduce.When not having input current, current-to-voltage convertor 12E is current sinking not.

Figure 13 has shown the concrete structure of current-to-voltage convertor 12.Figure 13 relates to the general construction of current-to-voltage convertor 12, comprising the structure shown in Figure 12 (d), 12 (e) and 12 (f).Identical or corresponding elements is represented with identical reference symbol.

In current-to-voltage convertor shown in Figure 13 12, electric current flows into the nMOS transistor MV1 that connects by the diode mode, so that produce output voltage in the drain electrode of nMOS transistor MV2.Transistor MV1 and MV2 constitute current mirroring circuit.The pMOS transistor MV3 that source electrode links to each other with VDD is between the drain electrode of VDD and transistor MV2.The drain electrode of pMOS transistor MV3 links to each other with the drain electrode of transistor MV2, makes pMOS transistor MV3 can be used as the active load of transistor MV2.

Variable power supply Va1 and variable amplifier Aa1 connect with input end, make the output of variable amplifier Aa1 link to each other with the grid of pMOS transistor MV3.Variable power supply Va1 changes output voltage according to the amplitude of the voltage that is produced at nMOS transistor MV1.Under the situation that the output voltage of variable power supply Va1 increases, the grid voltage of transistor MV3 increases, and makes the workspace of transistor MV3 move on to the saturation region from linear zone.In other words, variable power supply Va1 changes the current-voltage characteristic of transistor MV3.

When not having signal when input end is imported, the electromotive force of variable power supply Va1 is set to earth potential.Because the output voltage of variable power supply Va1 is set to be about 0 volt, so it is big that the absolute value of the Vgs of transistor MV3 becomes.In this case, the workspace of transistor MV3 is set at linear zone (linear zone of " Vgs-large " curve among corresponding Figure 14).So, although export some noise signals, in transistor MV3, do not produce corresponding noise signal from transistor MV2, because the impedance step-down of transistor MV3.Described output voltage correspondence VDD (high level attitude).

When input end has been imported amplitude greater than the signal of the minimum input sensitivity of variable power supply Va1, produce given voltage at input end, make variable power supply Va1 produce bias voltage.In this case, the absolute value of the Vgs of transistor MV3 diminishes, and makes the workspace of transistor MV3 be set to saturation region (corresponding the saturation region of " Vgs-small " curve).So it is big that the impedance of transistor MV3 becomes, make the output voltage vanishing (earth potential) of output terminal.In this case, the output voltage correspondence the low level attitude.

Variable amplifier Aa1 amplifies the output voltage of variable power supply Va1, makes the variable range of grid voltage of transistor MV3 to increase, and therefore, transistorized variable load scope increases.Promptly, variable power supply Va1 that is one another in series and variable amplifier Aa1 have constituted the bias voltage generating unit of transistor MV3, and can be defined as nonlinear element, it can change output voltage significantly according to the change in voltage of the input end of current-to-voltage convertor 12.Wish that variable amplifier Aa1 disposes like this, make when the voltage of input end the gain of hour amplifier Aa1 diminish, and the gain of amplifier Aa1 becomes greatly when the voltage of input end is big.

According to the structure of current-to-voltage convertor shown in Figure 13 12, when input current surpassed predetermined threshold value, significant variation can take place in output voltage.Current-to-voltage convertor 12F current sinking not when not having input current.As mentioned above, variable amplifier Aa1 and variable power supply Va1 can dispose shown in Figure 12 (d), 12 (e) and 12 (f).

Below with reference to Figure 15 another embodiment is described.Figure 15 has shown the described trigger pip generating means according to this embodiment.Identical or corresponding elements is represented by identical reference number, therefore, has omitted the explanation to identical or corresponding elements.In this embodiment, use signal sensor 21A to substitute wave detector 21 as power generator, it produces electric energy by receiving external energy.

For example, signal sensor 21A comprises detecting circuit, and this detecting circuit uses diode and/or MOS transistor or photo-electric conversion element, and the example of photo-electric conversion element has the photovoltaic electric energy generating device that uses the PN semiconductor element.That is, signal sensor 21A comprises that at least one can respond the input signal (for example, light signal) from the operating instrument (not shown) and produce the element of dc voltage.

Comprise in the situation of photo-electric conversion element that at signal sensor 21A if photo-electric conversion element is made of Si base PN junction element, so, p N-type semiconductor N end links to each other with earth potential, and n N-type semiconductor N end links to each other with start-up circuit 10.So n N-type semiconductor N end is defined as the output terminal of signal sensor 21A.When optical signalling input photo-electric conversion element, some electric charges move to the n N-type semiconductor N from the p N-type semiconductor N, so that improve the electromotive force of output terminal based on photoelectric effect.According to aforesaid operations, survey input optical signal, so that produce voltage according to the intensity of input optical signal.When not having the optical signalling input, electric charge does not move, because there is not photoelectric effect to take place.Then, because p N-type semiconductor N and n N-type semiconductor N ground connection (being set at earth potential), signal sensor 21A is consumed power not.So signal sensor 21A can be set to holding state, so as under the state of consumed power not receiving optical signals.

Start-up circuit 10 is operated by the voltage that signal sensor 21A response produces from the optical signalling of operating instrument (not shown) input, thus the output trigger pip.When producing train of signal by the switchable optics signal, start-up circuit 10 can produce corresponding signal data.

Below with reference to Figure 16 another embodiment is described.Figure 16 shows the described trigger pip generating means according to this embodiment.Identical or corresponding elements is represented by identical reference number, therefore, has omitted the explanation to identical or corresponding elements.In this embodiment, battery supply 13 is charged by trigger pip.

In Figure 16, provide electric energy for electrical equipment 23A and power-supply controller of electric 24A by AC power supplies 25 rather than battery supply 13.The electric energy of battery charger 26 is provided by AC power supplies 25.When trigger pip was from start-up circuit 10 input power-supply controller of electric 24A, electrical equipment 23A was connected by power-supply controller of electric 24A, and battery charger 26 also is switched on simultaneously.Then, battery supply 13 is by battery charger 26 chargings.

That is, when trigger pip from start-up circuit 10 input power-supply controller of electric 24A so that during energized controller 24, electrical equipment 23A is operated by the output of power-supply controller of electric 24A.Battery charger 26 is operated so that produce the voltage of an appointment by the output of power-supply controller of electric 24A, and this voltage is applied on the positive electrode of battery supply 13.So battery supply 13 is charged to the voltage of appointment.Usually, the maximum charging voltage of battery supply 13 is set to described given voltage.The electric energy of electrical equipment 23A, power-supply controller of electric 24A and battery charger 26 is provided by AC power supplies 25 (the perhaps DC power supply of an outside), and the output area of AC power supplies 25 is set to the output area greater than battery supply 13.

When trigger pip was not exported from start-up circuit 10, in other words, when start-up circuit 10 was disconnected, power-supply controller of electric 24A was disconnected, and made electrical equipment 23A and battery charger 26 be disconnected.So, just do not consume the electric energy of AC power supplies.

In this embodiment, when electrical equipment 23A was switched on, battery supply 13 was by battery charger 26 chargings.So when electrical equipment 23A was switched on, battery supply 13 was charged automatically, making needs hardly owing to battery supply 13 is changed in running down of battery.

Below with reference to Figure 17 another embodiment is described.Figure 17 has shown the described trigger pip generating means according to this embodiment.Identical or corresponding elements is represented by identical reference number, therefore, has omitted the explanation to identical or corresponding elements.In this embodiment, even provide a plurality of electrical equipment, the also operation that can expect in the operating distance that the configuration of trigger pip generating means has made in the prolongation of described generating means.

In the described trigger pip generating means according to this embodiment, start-up circuit 10B comprises start-up circuit-power control circuit 31, synchronizing circuit 32, trigger 33,34,35, decision circuitry 36 and storer 37.

Start-up circuit-power control circuit 31 is electric energy switches of the on/off of a power supply that is used for controlling start-up circuit 10B.In this case, start-up circuit-power control circuit 31 is connected by the trigger pip from current-to-voltage convertor 12, so that connect the power supply of start-up circuit 10B.In case the trigger pip of receiving, the on-state of the power supply of start-up circuit 10B just can be kept.When start-up circuit 10B was switched on, synchronizing circuit 32, trigger 33,34,35, decision circuitry 36 and storer 37 were just started working.The power consumption of current feedback circuit/current amplifier 11 described above and current-to-voltage convertor 12.

Synchronizing circuit 32 produces the clock signal with given frequency and sequential in response to the change frequency of the output level of current-to-voltage convertor 12.This clock signal can comprise a for example PLL.When synchronizing circuit 32 was operated by start-up circuit-power control circuit 31, the output of current-to-voltage convertor 12 changed with given frequency according to the header (preamble) of radio adaptation signal.So, the frequency of the output of synchronizing circuit 32 response current electric pressure converters 12 and clocking.This clock signal offers trigger 33,34,35 at least.

Trigger 33,34,35 has constituted shift register (shift resistor).The shifting function of this shift register depends on the clock signal of self synchronization circuit 32.For example, when trigger 33,34,35 is operated by start-up circuit-power control circuit 31, the output level of current-to-voltage convertor 12 (high level attitude or low level attitude) changes according to the id information of electrical equipment, wherein, described electrical equipment is operated according to ensuing id information after the header of radio adaptation signal.The change records of Huo Deing is stored in the trigger 33,34,35 that constitutes shift register like this, and is transferred in the decision circuitry 36.

Storer 37 is stored the id information (standard information) of wanting operated electrical equipment 23 non-volatilely.For example, when storer 37 was operated by start-up circuit-power control circuit 31, the id information that is stored in the storer 37 was read out, and is transferred in the decision circuitry 36.

Decision circuitry 36 compares id information in the trigger 33,34,35 and the id information in the storer 37.When the id information in the trigger 33,34,35 and the id information in the storer 37 were complementary, decision circuitry 36 was just exported the result of relevant id information coupling, and this result is provided for power-supply controller of electric 24.In order to keep the judged result of decision circuitry 36, can provide setting/reset flip-flop (set-reset flip-floop) at the output terminal of decision circuitry 36.Set-reset flip-floop can be provided in power-supply controller of electric 24 or the electrical equipment 23.

As mentioned above, in this embodiment, between current-to-voltage convertor shown in Figure 1 12 and power-supply controller of electric 24, provide start-up circuit-power control circuit 31, synchronizing circuit 32, trigger 33,34,35 (shift register), decision circuitry 36 and storer 37, so that confirm the id information of electrical equipment 23 at least.The number of trigger is not limited to three described in this embodiment, and the trigger of arbitrary number can be set according to the quantity of id information.For example, the number of trigger can be set to four or more.

Figure 18 has shown the relevant process flow diagram of operation with trigger pip generating means (being in on-state) shown in Figure 17.According to the process flow diagram of Figure 17, the trigger pip generating means is set to holding state, and till receiving electromagnetic wave (radio adaptation signal), described electromagnetic intensity has surpassed the detection sensitivity (step 41) of described device.When the trigger pip generating means receives the radio adaptation signal, received radio adaptation signal is converted into corresponding electric signal by antenna 22, wave detector 21 and current feedback circuit/circuit amplifier 11, and with in this electric signal input start-up circuit-power control circuit 31, so that connect start-up circuit 10B (step 42).So, can operate synchronizing circuit 32 or the like.

Then because the output voltage of current-to-voltage convertor 12 changes according to the header of radio adaptation signal, so, be provided with synchronizing circuit 32 frequency in case with the variation of the frequency of output voltage (step 43) synchronously.Then, because the output voltage of current-to-voltage convertor 12 changes according to following header id information and switching information (connection) afterwards in the radio adaptation signal closely, the change records of output voltage is stored in the trigger 33,34,35 (shift register) (step 44).Here, phrase " follow closely header after id information and switching information " is used for making operation.Storer 37 is being stored and described id information and switching information information corresponding.

Decision circuitry 36 judge the information (information that from change records, chooses) that is stored in the shift register (trigger) whether with the information in the storer 37 of being stored in be complementary (step 45).If do not match, the trigger pip generating means just is set at holding state ("No" in the step 45) so.If coupling, so, the output voltage of start-up circuit 10B is operated power-supply controller of electric 24, so that connect electrical equipment 23 (step 46).Like this, the making operation of electrical equipment 23 has just been finished.In this case, consider the economize on electricity problem, the power supply of start-up circuit 10B is cut off (step S47).For example, the power supply of start-up circuit 10B is cut off in the preset time section automatically, and this time period is managed in time by a timer (not shown).This operation can be used in step 45 the trigger pip generating means being reset to holding state.

Figure 19 has shown the relevant process flow diagram of operation with trigger pip generating means (being in off-state) shown in Figure 17.Identical or corresponding step is represented by identical reference character, therefore, has omitted the explanation to identical or corresponding step.Consider the economize on electricity problem after connecting electrical equipment 23, in this process flow diagram, describe the processing procedure that disconnects electrical equipment 23.

In this processing procedure, step 41 to 43 is carried out in the mode identical with Figure 18.Then, because the output voltage of current-to-voltage convertor 12 changes according to following header id information and switching information (disconnection) afterwards in the radio adaptation signal closely, the change records of output voltage is stored in the trigger 33,34,35 (shift register) (step 54).Here, phrase " follow closely header after id information and switching information " is used for opening operation.Storer 37 storages and id information and switching information information corresponding.

Decision circuitry 36 judge the information (information that from described change records, chooses) that is stored in the shift register (trigger) whether with the information in the storer 37 of being stored in be complementary (step 55).If do not match, the trigger pip generating means just is set at holding state ("No" in the step 55) so.If coupling, so, the output voltage of start-up circuit 10B is operated power-supply controller of electric 24, so that disconnect electrical equipment 23 (step 56).Like this, the opening operation of electrical equipment 23 has just been finished.In this case, consider the economize on electricity problem, the power supply of start-up circuit 10B is cut off (step S47), as shown in figure 18.For example, the power supply of start-up circuit 10B is cut off in the preset time section automatically, and Duan Youyi timer (not shown) of this preset time managed in time.This operation can be used in step 55 the trigger pip generating means being reset to holding state.

Shown in Figure 18 and 19, when two groups of information " id information after following header closely and switching information (connection) " and " id information and switching information (disconnection) after following header closely ", if two groups of decision circuitry 36 and storer 37 are provided, can easily judge these two groups of information so.If start-up circuit 10B judges " follow closely header after id information and switching information (connections) " and " following header id information and switching information (disconnection) afterwards closely " do not made a decision, so can for electrical equipment 23 provides another can be by the power down function of remote control.

Figure 20 has shown the process flow diagram about the operation of trigger pip generating means shown in Figure 17.In this case, the trigger pip generating means remains on on-state, and then, the radio operation of this device is cut off in input.Identical or corresponding step is represented by identical reference character, therefore, has omitted the explanation to identical or corresponding step.In this process flow diagram, the processing procedure that relates to process flow diagram shown in Figure 180 combines with the processing procedure that relates to process flow diagram shown in Figure 19.In the processing procedure relevant with process flow diagram shown in Figure 180, electrical equipment 23 is switched on back start-up circuit 10B and is not disconnected.Owing to consider that the power consumption of electrical equipment 23 connection back start-up circuit 10B is relatively little more a lot of than the power consumption of electrical equipment 23, when electrical equipment 23 is connected, can set up state described above.

The application of trigger pip generating means shown in Figure 17 is described below with reference to Figure 21 and Figure 22.Figure 21 has shown the structure of mobile phone, and this mobile phone uses trigger pip generating means shown in Figure 17 as application.

Mobile phone 70 comprises main body 230, antenna 231, battery supply 13 and is equipped with the power control circuit 100 of antenna 22.Antenna 22 and power control circuit 100 can dispose by mode shown in Figure 17.Here, the output signal of decision circuitry 36 is transfused to power switch 101.Power switch 101 is positioned at from battery supply 13 to mobile phone on the power lead (electrical line) of 70 main body 230.Power switch 101 is switched on or switched off by the situation demand.

According to this embodiment, the main body 230 of mobile phone 70 can be switched on or switched off by receive the radio adaptation signal on antenna 22.For example, as shown in figure 22, in certain zone (concert hall is for example thought and is wished that in this zone mobile phone 70 cuts out) by receiving the radio adaptation signal that is used to close mobile phone from base station 700B, mobile phone 70 can be forced closed or cut out automatically.By receiving the radio adaptation signal that is used to open mobile phone from base station 700A, mobile phone 70 can be opened automatically outside described zone (for example concert hall).

In the situation of the shutoff operation that carries out mobile phone 70, if the user is carrying out data transmission and reception or using application program, mobile phone can be configured so that will pently cut out to warn and greet the user by sending mobile phone so.In this case, also configurating mobile like this so that mobile phone by the relative trigger signal storage be closed under the situation of the present state that is provided with and/or user mode.If the user is the manual unlocking mobile phone in closed zone, above-mentioned pass, so, mobile phone can be configured so that the sound that gives a warning to the user, closes then.Then, open in the district if the user has come, mobile phone can be configured so that and can be opened so, and recovers the state that is provided with and/or the user mode stored.If the user does not wish to open mobile phone 70, mobile phone can be configured to so, so that do not open mobile phone automatically by carrying out the pattern setting in mobile phone 70 in advance.

In this embodiment, power control circuit 100 is positioned on the power lead of main body 230 of mobile phone 70, but the control circuit of the funtion part (such as warning bell generating unit, wireless communication unit or camera unit) of another main body that is used for remote control mobile phone 70 230 can be provided.For example, the mobile phone with the control circuit that is used to control wireless communication unit is useful in medical centre.Mobile phone with the control circuit that is used to control camera unit is useful in the confidential information district.

The Another application of trigger pip generating means shown in Figure 17 is described below with reference to Figure 23.Figure 23 has shown the structure of radio communication device (sensor network wireless communication node), and this radio communication device uses trigger pip generating means shown in Figure 17 as application.

Radio communication device 71 comprises main body 230A, antenna 231A, battery supply 13A, power control circuit 100 and initiator (evocator) 701.The configuration mode of power control circuit 100 can be identical with mode shown in Figure 17.Power switch 101 is positioned at from battery supply 13 process initiator 701 to the power lead of main body 230A.Power switch 101 is switched on or switched off by the situation demand.The antenna 231A of the antenna of power control circuit 100 and initiator 701 and main body 230A is general.The configuration power control circuit 100 in case export a given trigger pip to initiator 701 as indicator signal.

According to this embodiment, by can switch on and off main body 230A and the initiator 701 in the radio communication device 71 at antenna 231A place reception radio adaptation signal.Initiator 701 is electromagnetic radiation devices, and it can be at antenna 231A place radiated electromagnetic wave signal.When initiator 701 is switched on, and when power control circuit 100 receives indicator signal, away from Wireless Telecom Equipment shown in Figure 23, have with another Wireless Telecom Equipment of the identical configuration mode of Figure 23 and just connected by electromagnetic wave signal from initiator 701 radiation.Like this, a plurality of radio communication devices separated from one another can be switched on or disconnect subsequently.

Radio communication device among this embodiment is effective for the sensor network wireless communication node.For the sensor network wireless communication node, under the situation that does not communicate operation, by the control of power control circuit 100, the main body 230A for radio communication device 71 does not provide electric energy, thereby main body 230A is closed.In this case, the power consumption of sensor network wireless communication node is almost nil.That is, the power consumption of sensor network wireless communication node can be kept very lowly.When under the extremely low situation of power consumption wireless communication node being communicated when operation, wireless signal is provided for power control circuit 100, makes it to connect, and makes wireless communication node can be switched on (being operated).In this case, this wireless communication node just can be used as normal sensor network apparatus.

Initiator 701 is configured to operate another radio communication device of alternative wireless communication device 71.For example, arouse when indication when power control circuit 100 receives from another radio communication device, power control circuit 100 is transferred to initiator 701 with received signal.The amplitude of this received signal can be provided with greater than the amplitude of another signal that will transmit in sensor network communication.If the repetition above-mentioned steps by corresponding each initiator being carried out the repeat transmitted of received signal, is operated a plurality of wireless communication nodes separated from one another so subsequently.In this process, the main body 230A of non-concern is not required to operate, make cordless communication network be set up, total power consumption of this cordless communication network is kept very lowly simultaneously.

Initiator 701 has an oscillator, and its frequency range is fit to the receiving belt scope of power control circuit 100, modulating device and power amplifier.The antenna of initiator 701 can with the antenna duplexer of main body 230A and power control circuit 100.The antenna of initiator 701 perhaps, can independently be provided.

Some embodiment have been described above.In this case, the wave detector 21 among Fig. 1,6 and 17 can be configured to the wave detector announced among JP-A 2006-34085 (KOKAI) and the JP-A 2006-166415 (KOKAI).In this case, the power consumption of wave detector can increase to a certain extent to some extent in the holding state, but the sensitivity of wave detector has also increased, and makes to operate leaving the far electrical equipment of wave detector.

Claims

1. trigger pip generating means comprises:

First power end and second source end;

First current feedback circuit, its receiving inputted signal produces first electric current with first amplitude with the amplitude according to described input signal;

Second current feedback circuit, it receives described first electric current of described first current feedback circuit, and with second electric current that generation has second amplitude, described second electric current flows to described second source end from described first power end;

Current mirroring circuit is used for amplifying described second electric current that is produced from described second current feedback circuit, with the electric current that has obtained to amplify;

Trigger signal generator is used for described current conversion of having amplified is become trigger pip, be used to trigger flip flop equipment, and the voltage amplitude correspondence of described trigger pip the current amplitude of the described electric current that has amplified;

Wherein, described first and second current feedback circuits are connected to some in described first power end and the described second source end.

2. device according to claim 1,

Wherein, described second current feedback circuit comprises additional current mirroring circuit.

3. device according to claim 1 also comprises

The current mirroring circuit of a plurality of additional cascades.

4. device according to claim 1,

Wherein, described first current feedback circuit comprises having the transistorized wave detector of nMOS, and it is configured so that detecting circuit is applied on described nMOS transistor drain and the grid, and normal voltage is applied on the transistorized grid of described nMOS.

5. device according to claim 1,

Wherein, described second current feedback circuit comprises a nMOS transistor and the 2nd nMOS transistor, and it comprises described current mirroring circuit,

Wherein, described current mirroring circuit also comprises:

The one pMOS transistor, its configuration make a described pMOS transistor drain link to each other with described the 2nd nMOS transistor drain with grid, and second standard electrode potential is applied on the transistorized source electrode of a described pMOS; And

The 2nd pMOS transistor, it is configured so that to export from described the 2nd pMOS transistor drain by described signal amplifier amplified current.

6. device according to claim 1,

Wherein, described second current feedback circuit comprises transistor,

Also comprise offset compensator, be used for the drift current of flow compensated through described transistor drain.

7. device according to claim 1,

Wherein, described trigger signal generator comprises:

The one nMOS transistor, it is configured so that to flow to the transistorized source electrode of a described nMOS by described signal amplifier amplified current from the transistorized leakage of a described nMOS/grid common connection end;

The 2nd nMOS transistor, itself and a described nMOS transistor constitute an additional current mirroring circuit;

The pMOS transistor, it is configured so that described pMOS transistor drain links to each other with described the 2nd nMOS transistor drain, and standard electrode potential is applied on the transistorized source electrode of described pMOS; And

Bias voltage generator, it is configured so that the voltage that is produced between the transistorized leakage of a described nMOS/grid common connection end and the transistorized source electrode of a described nMOS is transfused to, export non-linear voltage as trigger pip so that respond the amplitude of described voltage to the transistorized grid of described pMOS

Wherein, described trigger pip is exported from the connected node between described the 2nd nMOS transistor drain and the described pMOS transistor drain.

8. a trigger pip generating means comprises:

A pair of power end;

Current feedback circuit, it produces first electric current with first amplitude according to input signal;

Transistor has source electrode, drain and gate, and described source electrode links to each other with one of described power end under not offset state;

Current mirroring circuit links to each other with described transistor drain, is used to produce described transistorized amplified current;

Voltage generator is used to apply voltage to described transistorized grid, so that according to first amplitude of described first electric current second electric current with second amplitude is flowed between described power end; And

Trigger signal generator is used for described current conversion of having amplified is become trigger pip, and the voltage amplitude correspondence of described trigger pip the current amplitude of the described electric current that has amplified.

9. device according to claim 1 also comprises:

Power switch, it is operated in response to described trigger pip, thereby produces and keep on-state;

Synchronizing circuit controls clocking by the power supply that uses described power switch to carry out, and the variable frequency of the output level of described clock signal and described trigger signal generator is synchronous;

Shift register is by the power supply control of using described power switch to carry out, by the described clock signal of input as shift signal, the variable hysteresis of storing described trigger signal generator;

Storer controls storage standards information by the power supply that uses described power switch to carry out; And

Decision circuitry, under the power supply control of using described power switch to carry out, by the relatively generation indicator signal to described variable hysteresis and described standard information, the variable hysteresis and the described standard information of this indicator signal indication output level are complementary.

10. device according to claim 9,

Wherein, described memory stores first standard information and second standard information are as described standard information;

Also comprise additional power switch, this power switch responds first indicator signal and operates, so that produce and keep off-state, described first indicator signal indication described variable hysteresis and described first standard information of output level in described decision circuitry is complementary, and this power switch responds second indicator signal and operates, so that produce and keep on-state, described second indicator signal indication described variable hysteresis and described second standard information of output level in described decision circuitry is complementary.

11. a receiver comprises trigger pip generating means according to claim 1.